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synonym Comparative
さっそく
VS
一斉に

Differences Between "さっそく" and "一斉に"

Option A
さっそく
Meaning
immediately, without delay, at once
Reading
さっそく (sassoku)
Syllabus Level
N3
Practical Example
知らせを聞いて、さっそく準備を始めた。
Upon hearing the news, I immediately started preparations.
Option B
一斉に
Meaning
all at once; simultaneously; in unison
Reading
いっせいに (issei ni)
Syllabus Level
N3
Practical Example
合図と共に、選手たちは一斉にスタートした。
At the signal, the athletes all started at once.

Which one to use?

Select the correct Japanese word for this context

Which word fits this context: "(immediately, without delay, at once)"?
🎉 正解 / Correct!
使い分け解説:
- さっそく: Adverb indicating prompt action. Used when something is done quickly after a decision, event, or receipt of information. (決定や出来事、情報の受領後、すぐに行動することを示す副詞。)
- 一斉に: Used to describe an action performed by many people or things at the exact same time. Often conveys a sense of suddenness or uniformity.
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